000
AXPZ20 KNHC 040916
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL                           
1005 UTC SUN AUG 04 2013

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...SPECIAL FEATURES...
TROPICAL STORM GIL AT 14.6N 135.2W AT 0900 UTC MOVING W-SW OR 
250 DEGREES AT 8 KT. ESTIMATED CENTRAL PRES 1006 MB. MAXIMUM 
SUSTAINED WINDS 35 KT GUSTS 45 KT. SCATTERED MODERATE ISOLATED 
STRONG CONVECTION WITHIN 75 NM NW SEMICIRCLE. LATEST FORECAST 
CALLS FOR CONTINUED WEAKENING AS GIL MOVES W INTO PROGRESSIVELY 
INCREASING SHEAR AND COOLER WATERS AND IS EXPECTED TO BECOME A 
TROPICAL DEPRESSION THIS AFTERNOON AND A REMNENT LOW TONIGHT. 
SEE LATEST NHC FORECAST/ ADVISORY UNDER AWIPS/WMO HEADERS 
MIATCMEP2/WTNT22 KNHC FOR ADDITIONAL DETAILS.

JUST E OF GIL...TROPICAL DEPRESSION EIGHT-E AT 12.8N 124.6W WITH 
CENTRAL PRES 1008 MB AND MAXIMUM SUSTAINED WIND 30 GUSTS TO 40 
KT MOVING W OR 270 DEGREES AT 8 KT AND EXPECTED TO INTENSIFY TO 
TROPICAL STORM LATER TODAY. NUMEROUS MODERATE TO STRONG 
CONVECTION WITHIN 200 NM SW AND 30 NM NE SEMICIRCLES. SEE LATEST 
NHC FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP3/WTNT23 
KNHC FOR ADDITIONAL DETAILS.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...           
MONSOON TROUGH FROM 9N84W TO 9N105W TO 14N120W. SCATTERED 
MODERATE TO STRONG CONVECTION WITHIN 210 NM S OF AXIS FROM 114W-
122W.

...DISCUSSION...
NE-SW UPPER LEVEL TROUGH ENTERS EXTREME NW CORNER OF DISCUSSION 
AREA FROM 32N130W TO 28N140W. MODERATE TO STRONG SUBSIDENCE WITH 
DRY AND STABLE AIR AT THE MIDDLE AND UPPER LEVELS COVERS THE 
AREA N OF 20N W OF 115W. ELONGATED E-W UPPER LEVEL RIDGE EXTENDS 
ALONG 14N-16N WITH ANTICYCLONIC CIRCULATIONS OVER T.S GIL AND 
T.D. EIGHT-E AND EXTENDING FROM 14N140W TO  15N112W. SW FLOW 
OVER GIL EXPECTED TO INCREASE MAKING ENVIRONMENT ALOFT MORE 
ADVERSE IN SPITE OF HAVING THE BENEFIT OF 28 DEGREE SEA SURFACE 
TEMPERATURES. AS GIL WEAKENS...TROPICAL DEPRESSION EIGHT-E 
IMPROVES ITS OUTFLOW ALOFT AND INTENSIFIES TO TROPICAL STORM 
BY EARLY SUN.     
 
BROAD HIGH PRES SURFACE RIDGE IS N OF 20N W OF 118W. OUTSIDE OF 
THE TROPICAL CYCLONES SURFACE WINDS ACROSS THE AREA ARE 20 KT OR 
LESS AND SEAS ARE LESS THAN 8 FT.

$$
DGS